56 - Anatomic Variation Study in Liver Vascularization: Report of Two Accessory Hepatic Arteries

Poster Board Number: 56
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Co-authors:

Fernando Luiz Westphal - Universidade Federal do Amazonas; Helder Bindá Pimenta - Universidade do Estado do Amazonas; Gilberto Santos Cerqueira - Universidade Federal do Ceará; Daniela Baptista Frazão - Universidade Federal do Amazonas; Camilly Guimarães da Silva Batalha - Universidade do Estado do Amazonas; Ketholyn Jaqueline Bespalhuk - Universidade do Estado do Amazonas; Gabriela Salini Ribeiro - Universidade do Estado do Amazonas; Ronny helson de Souza Alves - Universidade do Estado do Amazonas; Glauco Cesar Vieira Lopes - Universidade do Estado do Amazonas; Adryana Feitosa Bezerra - Universidade do Estado do Amazonas; Fernando Henrique Lobo Almeida, - UNL; Sabrina Carvalho Chagas - UNL; Salete Martens Aurelio - UNL; Maria Carolina Raposo da Câmara Pazuello - UNL; Salomon Schuster Biallowons - UNL; Carla Souza Calheiros - UNL; Menderson Augusto Gadelha Cavalcante - UNL; João Henrique Alvares Dutra - UNL; Raimundo Nonato Fernandes Junior - UNL; Gabriel Figueirinha Almeida - UNL; Alisson de Souza Sá - UNL; Ytafaella Oliveira Santana - UNL; Giovanna Beatriz Schmitt - UNL; Bernardo Brasil Spies - UNL; Keila Cristiane Batista do Valle - UNL

Abstract Body : Introduction

According to Malicki et al. (2021), the occurrence of a left accessory hepatic artery has a lower prevalence compared to the right accessory hepatic artery. Furthermore, in another study by Dutta and Mukerjee (2010), only 5% of the analyzed cases were able to identify the accessory hepatic artery. Therefore, this present study aims to report the emergence of two left accessory hepatic arteries, originating from the left gastric artery, which were observed in a cadaveric specimen during anatomical study at the Human Anatomy Laboratory, University of the State of Amazonas.



Materials and Methods

This study involved the dissection and analysis of a male cadaver during participation in the 2023 PADEX GERAL extension project at the University of the State of Amazonas. Dissection procedures followed the techniques outlined in: "Anatomical Techniques - 1st edition," "Clemente's Anatomy Dissector - Third Edition," and referenced the Yokoshi Anatomy Atlas as a reliable source for identifying anatomical structures. Additionally, data were collected from PubMed, Google Scholar, and various books as sources for anatomical study.



Results

During the dissection of a cadaveric specimen using available materials, two left accessory hepatic arteries originating from the left gastric artery were observed. Both arteries exhibited a linear course towards the visceral surface of the left lobe of the liver, with the upper one presenting a slightly oblique trajectory compared to the lower one. In this context, left accessory hepatic arteries are reported in 11% of cases, originating from various sources, with a higher frequency observed from the left gastric artery or the celiac trunk (PAI et al., 2008).



Conclusion

Thus, a verified observation was made regarding the origin of two left accessory hepatic arteries originating from the left gastric artery, a fact present in approximately 11% of cases, as evidenced by Pai et al. (2008). This analysis enabled the examination of this variation, which has been minimally documented in previous studies. For instance, Fonseca-Neto et al. (2017) reported that out of 479 liver transplants, only 0.62% presented this anomaly.



Significance/Implication

Hence, it is pivotal to determine hepatic artery variation for both surgeons and interventional radiologists (IMAM et al., 2021). Mapping the vasculature becomes fundamental in liver transplant surgeries. Moreover, understanding the presence of accessory vessels is crucial, as they might be sites prone to bleeding or even the sole source of vascularization (SUKUMARAN et al., 2022).